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Evaluation of the overall sero-prevalence of Bordetella pertussis infection among subjects with respect to anti-pertussis (anti-PT) antibody levels. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

Evaluation of the overall sero-prevalence of Bordetella pertussis infection among subjects with respect to anti-PT seropositivity status. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

Evaluation of the overall sero-prevalence of Bordetella pertussis infection among subjects with respect to anti-PT seronegativity status. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

Secondary Outcome Measures
:

Evaluation of the sero-prevalence of B. pertussis antibodies among healthcare professionals aged ≥ 18 years. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

By age and gender, by type of healthcare professional, by hospital department of the healthcare professional, duration of service and time spent with patients.

Evaluation of the sero-prevalence of anti-pertussis antibodies among healthcare professionals by vaccination history. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

Evaluation of the sero-prevalence of anti-pertussis antibodies among healthcare professionals by previous history of pertussis. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

Description of the knowledge and beliefs about whooping cough and vaccination against pertussis among healthcare professionals. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

Description of the household composition of healthcare professionals to identify the proportion of healthcare professionals potentially at a higher risk of contracting and transmitting pertussis. [ Time Frame: Day 0 of each subject at the time of enrollment. ]

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Ages Eligible for Study:

18 Years and older (Adult, Senior)

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Sampling Method:

Non-Probability Sample

Study Population

Healthcare professionals actively working and involved with patient care in Spanish hospitals.

Criteria

Inclusion Criteria:

Written informed consent obtained from the subject.

Subjects who the investigator believes that they can and will comply with the requirements of the protocol.